JP3211928B2 - Power window equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power window device for opening and closing a window glass by a motor in response to an operation of an open / close switch.

[0002]

2. Description of the Related Art Generally, a motor vehicle has a power window device, such as a passenger car, which automatically moves a window glass such as a door window in an opening / closing direction by driving a motor in accordance with an operation of an open / close switch. In recent years, it has been widely used, and in recent years, it has been detected whether or not a foreign object such as an article or a part of the body is caught between the door frame and the window glass. A safety device for forcibly rotating the motor by a predetermined amount so as to open and release the pinched state is gradually provided.

As one of conventional power window safety devices, there is a power window device provided with a safety device disclosed in Japanese Utility Model Laid-Open No. 6-37483. In the power window device, two sets of Hall elements that output pulse signals having a phase difference of 90 ° with the rotation of the motor are provided,
If the absolute speed of opening and closing the window glass determined from the interval time of the pulse signal is lower than the reference speed, or if the relative speed determined from the front-to-back ratio of the interval time is significantly lower than a predetermined rate, It is determined that a foreign object is interposed.

Further, in the power window device, when the window glass is closed and the motor stops, the phase difference between the pulse signals from the two sets of Hall elements is used so as not to judge that the foreign matter is trapped. The direction of rotation of the motor is detected, and the pulse signal from the Hall element is counted up and down by a counter in accordance with the direction of rotation, and this count value is in the fully closed position of the window glass and in the safety control operation release area in the vicinity thereof. If the count value is within the range of the corresponding count value, the detection operation of the foreign substance is not performed.

In the power window device, when the count value of the counter needs to be reset, for example, when the microcomputer of the power window device constituting the counter is initialized by replacing a battery or the like, the foreign matter is removed. It does not detect the pinching of the window.Instead, it does not accept the operation of the auto-up switch, which keeps raising the window glass until it reaches the fully closed position even if you release your hand after the operation. It is configured to receive only the operation of the manual up switch in which the rising operation of the glass is continued. Therefore, the reset of the count value is performed by continuously operating the manual up switch to raise the window glass to the fully closed position side, and when the count value of the counter is a value within the safety control operation release area, the absolute speed is reset. Is lower than the reference speed, and when the relative speed is significantly lower than a predetermined rate, it is determined that the window glass has reached the fully closed position, and the count value is set to a value “0” corresponding to the fully closed position. It was done by resetting.

[0006]

However, if the operation of the manual up switch is made valid as usual, as in the case of the above-mentioned power window device, the manual up switch may be operated unintentionally, such as when a child is unconscious. Even during the operation, since the window glass continues to rise unconditionally to the fully closed position side, as the operation at the time of resetting the count value that does not perform the detection operation of the entrapment, in order to ensure safety, There was room for some improvement. The present invention has been made in view of the above circumstances, the object of the present invention,
It is possible to improve safety against entrapment of foreign matter when closing the windowpane by operating the manual up switch even when the detection operation of entrapment cannot be performed, such as when the open / close position of the windowpane is indeterminate. It is to provide a power window device which can be used.

[0007]

According to the present invention, a window glass 51 is moved in the opening / closing direction by a motor 11 in response to the operation of an opening / closing switch 13 as shown in FIG. The count value C of the counter means 15A is determined by the number of pulses of the pulse signal PA output in synchronization with the rotation of the motor 11 and the rotation direction of the motor 11.
In a power window device for increasing or decreasing A to correspond to the open / close position of the window glass 51, a determination means 15B for determining whether or not the count value CA corresponds to the open / close position of the window glass 51; When the count value CA does not correspond to the open / close position of the window glass 51 based on the determination result of the determination means 15B, the open / close switch 1
The rotation of the motor 11 in the closing direction of the window glass 51 by the operation 3 is at least one of a time when a predetermined time has elapsed from the start of rotation of the motor 11 and a time when the window glass 51 has moved by a predetermined amount. The movement amount regulating means 15C that stops at the point of time is provided.

Further, the present invention is characterized in that when the operation of the open / close switch 13 for rotating the motor 11 in the closing direction is released when the count value CA does not correspond to the open / close position of the window glass 51, The movement amount restricting means 1
A regulation release means 15D for releasing the rotation stop of the motor 11 by 5C is further provided.

[0009]

According to the present invention, when the determination means 15B determines that the count value CA of the counter means 15A does not correspond to the open / close position of the window glass 51, the motor 11 is turned on / off by the open / close switch 1.
When the window glass 51 is rotated in the closing direction by the operation of the motor 3, the motor 11 is turned off at least one of a time when a predetermined time has elapsed from the start of rotation of the motor 11 and a time when the window glass 51 has moved by a predetermined amount. The rotation is stopped by the movement amount restricting means 15C. Therefore, for example, due to the replacement of the battery or the output leak or detection leak of the pulse signal PA, a deviation occurs between the actual open / close position of the window glass 51 and the count value CA. 51
Is moved to the reference position of the movement range, the count value CA needs to be reset to a predetermined value corresponding to the reference position. The rotation of the motor 11 is stopped for a fixed time or by the movement amount by the movement amount regulating means 15A, and in particular, the movement of the window glass 51 in which the foreign matter may be caught in the closing direction can be safely performed. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a power window device according to the present invention will be described below with reference to the drawings. FIG. 2 is an explanatory view showing a schematic configuration of a power window device according to an embodiment of the present invention by partial blocks. In FIG. 2, reference numeral 1 denotes a power window mechanism, and 3 denotes a pinch detection release device for detecting and releasing pinching of foreign matter. Are respectively shown. The power window mechanism 1 includes a door 5
A motor 11 for opening and closing the window glass 51, an open / close switch 13 operated to open and close the window glass 51, and an open / close switch 13
A microcomputer that controls the motor 11 to rotate in the opening and closing direction of the window glass 51 in response to the operation of
15 (abbreviated as a microcomputer). The pinch detection canceling device 3 includes a pulse generator 31 that outputs a motor pulse signal corresponding to the number of rotations of the motor 11, the microcomputer 15, and the like.

The open / close switch 13 is disposed, for example, on the upper surface of an armrest (not shown) inside the door 5 and includes a conventionally known seesaw type operation button (not shown) which can be tilted back and forth. And a self-returning mechanical switch. The open / close switch 13 outputs a rising request signal 13a for raising the window glass 51 to the fully closed position side by operating the operation button so as to tilt forward, and tilts the operation button backward. By operating, a lowering request signal 13b for lowering the window glass 51 to the fully open position side is output.

The pulse generator 31 is connected to the motor 11
, And the pulse generator 31 is
As shown in the figure, the first and second two sensors 31a, 3
1b. The first and second sensors 31a, 31
1b, Hall ICs 31c and 31d that generate an electromotive force when a magnetic field in a predetermined direction is applied, and Hall ICs 31c and 31d, respectively.
and A / D converters 31e and 31f for digitally converting the electromotive force of the Hall ICs 31 and 31d.
The reference numerals c and 31d are disposed at locations where the distance from the output shaft 11a is equal in the radial direction of the output shaft 11a of the motor 11, and the positions of which are shifted by 90 ° in the circumferential direction of the output shaft 11a. .

The pulse generator 31 is connected to the output shaft 11.
The magnetic field created by the magnet 17 fixed to the
As each of the Hall ICs 31c,
An electromotive force is generated in each of the first and second sensors 31a and 31b by the electromotive force, as shown in FIG.
Pb is configured to be output once each time the motor 11 makes one rotation.

4 shows the first pulse signal Pa from the first sensor 31a, and the lower part of FIG. 4 shows the second pulse signal Pb from the second sensor 31b. When the motor 11 rotates in the direction to move to the fully closed position side, the output directions of the first and second pulse signals Pa and Pb, and arrow B indicate the direction in which the window glass 51 moves down to the fully open position side. 11 shows output directions of the first and second pulse signals Pa and Pb when the rotation of the motor 11 is performed. As is clear from FIG. 4, when the window glass 51 rises, the first pulse signal Pa from the first sensor 31a is output.
Is 90 ° ahead of the phase of the second pulse signal Pb from the second sensor 31b, and when the window glass 51 descends,
The phase of the second pulse signal Pb from the second sensor 31b precedes the phase of the first pulse signal Pa from the first sensor 31a by 90 °.

Next, the hardware configuration of the microcomputer 15 will be described with reference to the block diagram of FIG. The microcomputer 15 includes a CPU (Central Processing Unit).
, Central processing unit) 15a and RAM (Random Access M)
emory) 15b and ROM (Read-Only Memory) 15c
It is composed of

The motor 11 is connected to the CPU 15a via an output interface 15d and a driver 15e. The open / close switch 13 and first and second sensors 31a and 31b are connected via an input port 15f.
Are connected respectively. The RAM 15b is configured as shown in FIG.
As shown by a memory area map, the data area has a data area for storing various data and a work area used for various processing operations. Of these, the work area includes an operation, a first to a fourth position counter, a first and a second rising counter. Quantity counter, one-side sensor failure diagnosis counter (hereinafter abbreviated as one-side counter), first and second detection timing buffers, first and second period buffers, first and second speed buffers, first and second reductions Areas for a speed buffer, first to sixth elapsed time measurement timers, and a position determination flag are provided. The ROM 15c stores a control program for causing the CPU 15a to perform various processing operations.

Next, the processing performed by the CPU 15a in accordance with the control program stored in the ROM 15c will be described with reference to the flowcharts of FIGS. When the microcomputer 15 is started and the program is started, as shown in FIG. 7, the CPU 15a checks whether or not there is an output of either the rising request signal 13a or the falling request signal 13b from the open / close switch 13. Then, if neither signal is output (N in step S1), the output of the motor 11 ascending and descending drive signals Ma and Mb to the driver 15e is stopped (step S3). Then, the count value Cc of the one side counter area of the RAM 15b is reset to zero (step S5), and the RAM 15b
After the measurement of the first elapsed time Tu, which is the elapsed time from the start of output of the rising request signal 13a, is stopped in the first elapsed time measurement timer area of FIG.
7), and proceed to step S17.

If either of the rising request signal 13a and the falling request signal 13b is output (Y in step S1), it is determined whether the output signal is the rising request signal 13a. It is confirmed (step S9), and when the signal is the rising request signal 13a (Y in step S9),
The measurement of the first elapsed time Tu is started in the first elapsed time measurement timer area (step S11). And
After outputting the ascending drive signal Ma for rotating the motor 11 in the ascending direction to close the window glass 51 to the driver 15e (step S13), the process proceeds to step S17. On the other hand, if the signal is not the rising request signal 13a (N in step S9), a lowering driving signal Mb for rotating the motor 11 in the lowering direction of opening the window glass 51 is output to the driver 15e (step S9).
15), and proceed to step S17.

In step S17, it is checked whether or not a rising or falling edge of the first pulse signal Pa from the first sensor 31a has been detected, and if it has been detected (Y in step S17), a step S17 will be described later. After performing the one-sensor pulse detection interrupt process (step S19), the process proceeds to step S19.
The process proceeds to step S21, and if not detected (N in step S17), skips step S19 and proceeds to step S21.

[0020] In the first sensor pulse detection interrupt processing process in the step S19, as shown in FIG. 12, first, at step S19a, the time Ta _n which detects a rising or falling edge of the first pulse signal Pa , RAM1
Stored in the first detection timing buffer area 5b, the following step S19b, the in the second elapsed time measuring timer area RAM 15b, from the time Ta _n the following 1
The measurement of the second elapsed time Ta, which is the elapsed time up to the time Tan _{+ 1} when the rising or falling edge of the pulse signal Pa is detected, is stopped and reset to zero. Further, in the second elapsed time measuring timer area to start measuring the second elapsed time Ta (step S19c), followed by first and second pulse signal Pa at the time Ta _n, the output level of Pb is equal to (Step S19)
d).

If the output levels of the first and second pulse signals Pa and Pb are equal (Y in step S19d), RA
After incrementing the count value Ca of the first position counter area of M15b by “1” (step S19e), the process proceeds to step S19g. If the output levels are not equal (N in step S19d), the count value Ca is set to “1”. After decrementing (step S19f), the process proceeds to step S19g. In step S19g, RAM1
In the calculation area 5b, a second value of the RAM 15b to be described later is calculated based on the count value Ca of the first position counter area.
A difference value C obtained by subtracting the count value Cb of the position counter area is obtained, and then the absolute value of the difference value C is used as a reference difference value N _DIFF
It is confirmed whether or not it is above (step S19h).

Each of the count values Ca and Cb in the first and second position counter areas decreases when the window glass 51 increases in the closing direction, and increases when the window glass 51 decreases in the opening direction. I do. Then, the respective count values C
“a” and “Cb” become “0” when the window glass 51 is in the fully closed position, and become “N” when the window glass 51 is in the fully opened position. The first and second pulse signals Pa and Pb are output once each with a phase shift of 90 ° each time the motor 11 rotates once, so that the first and second sensors 31a and 31b are output.
As long as both b operate normally, the absolute value of the difference value C is “0” or “1”. Therefore, the reference difference value N
_DIFF may be set to “2”, but in this embodiment, the false first and second pulse signals Pa and Pb generated by noise are used.
Assuming a case where the rising edge is counted, the reference difference value N _DIFF is set to “3” including some margin.

If the difference value C is not equal to or larger than the reference difference value N _DIFF (N in step S19h), the process proceeds to step S1.
9n, if the difference is equal to or greater than the reference difference value N _DIFF (Y in step S19h), the count value Ca
It is checked whether it is larger than b (step S19)
j). When the count value Ca is larger than the count value Cb (Y in step S19j), the count value Ca is corrected to the same value as the count value Cb (step S19).
k), the process proceeds to step S19n, and if the count value Ca is not larger than the count value Cb (step S19j)
N), the count value Cb is corrected to the same value as the count value Ca (step S19m), and the process proceeds to step S19n.

In step S19n, the rising drive signal Ma
Or, confirm whether or not the descending drive signal Mb is output,
If not output (N in step S19n), FIG.
The process proceeds to step S21 in the flowchart of (1), and if the output is performed (Y in step S19n), the first and second sensors 3
The count value Cc of the one-sided counter area of the RAM 15b is incremented by "1" to confirm whether one of 1a and 31b is out of order (step S19).
p), the absolute value of the count value Cc is equal to the abnormality determination reference value N
It is checked whether it is _ABNORM or more (step S19)
r).

The count value Cc of the one-sided counter area is incremented by "1" every time the first pulse signal Pa is output, and is "1" every time the second pulse signal Pb is output, as described later. It is decremented by one. As shown in FIG. 4, the rising and falling edges of the first and second pulse signals Pa and Pb alternate as long as both the first and second sensors 31a and 31b operate normally. Occurs and therefore the count value Cc
Is “0” or “1”. Moreover, the count value Cc is determined by the rising drive signal Ma and the falling drive signal Mb.
When the output of is stopped, it is reset to zero. For this reason,
Although the abnormality determination reference value N _ABNORM may be set to “2”, in the present embodiment, the first and second sensors 31a, 31a are output by one output of the rising drive signal Ma and the falling drive signal Mb.
The abnormality determination reference value N _ABNORM is set such that the entrapment detection processing operation is performed only when one of the first and second pulse signals Pa and Pb from 31b is not continuously output. It is set to “10”.

If the absolute value of the count value Cc is not equal to or _larger than the abnormality determination reference value N _ABNORM (step S1).
N at 9r), the process proceeds to step S21, and the abnormality determination reference value N
If it is _{equal to} or greater than _ABNORM (Y in step S19r), it is determined that one of the first and second sensors 31a and 31b has failed and one of the count values Ca and Cb is indeterminate. The flag F in the position determination flag area of the RAM 15b is set to "0" (Step S).
19t), and proceed to step S21.

As shown in FIG. 7, in step S21,
It is checked whether the rising edge or the falling edge of the second pulse signal Pb from the second sensor 31b has been detected,
If detected (Y in step S21), after performing a second sensor pulse detection interrupt process (to be described later) (step S23), the process proceeds to step S25. If not detected (N in step S21), The process skips step S23 and proceeds to step S25.

In the second sensor pulse detection interrupt processing at step S23, as shown in FIG. 13, first, at step S23a, the time Tb _{n at} which the rising or falling edge of the second pulse signal Pb is detected is determined. , RAM1
5b, and in the subsequent step S23b, in the third elapsed time measurement timer area of the RAM 15b, the next second time from the time Tb _n
The measurement of the third elapsed time Tb, which is the elapsed time until the time Tb _{n + 1} at which the rising or falling edge of the pulse signal Pb is detected, is stopped and reset to zero. Further, in the third elapsed time measuring timer area to start measuring the third elapsed time Tb (step S23c), followed by first and second pulse signal Pa at the time point Tb _n, the output level of Pb different It is checked whether or not it has been performed (step S23d). If the output levels of the first and second pulse signals Pa and Pb are different (Y in step S23d), the count value Cb of the second position counter area is incremented by "1" (step S23e), and then step S23g. And the output level is not different,
That is, if they are equal (N in step S23d), the count value Cb of the second position counter area is decremented by "1" (step S23f), and the process proceeds to step S23g.

In step S23g, step S1 is executed.
9g, a difference value C is obtained in the calculation area by subtracting the count value Cb of the second position counter from the count value Ca of the first position counter area, and then the absolute value of the difference value C is used as the reference difference. It is checked whether the value is equal to or more than the value N _DIFF (step S23h). If it is not equal to or greater than the reference difference value N _DIFF (N in step S23h),
23n, and when the difference is equal to or larger than the reference difference value N _DIFF (Y in step S23h), similar to step S19j,
It is determined whether or not the count value Ca is larger than the count value Cb (step S23j). When the count value Ca is larger than the count value Cb (step S23j
Y), after the count value Ca is corrected to the same value as the count value Cb (step S23k), the process proceeds to step S23n. If the count value Ca is not greater than the count value Cb (N in step S23j), the count value Ca is corrected. After correcting Cb to the same value as the count value Ca (step S23)
m), and proceeds to step S23n.

At step S23n, at step S1
9n, the ascending drive signal Ma or the descending drive signal Mb
It is confirmed whether or not is output. If it is not output (N in step S23n), the process proceeds to step S25 in the flowchart of FIG. 7, and if it is output (step S23).
n, Y), the count value Cc of the one-sided counter area is decremented by "1" (step S23p), and it is confirmed whether or not the absolute value of the count value Cc is equal to or greater than the abnormality determination reference value N _ABNORM (step S23r). . Count value Cc
If the absolute value of is not more than the abnormality determination reference value N _ABNORM (N in step S23r), the process proceeds to step S25, and if it is more than the abnormality determination reference value N _ABNORM (step S2).
3r, N), assuming that one of the first and second sensors 31a, 31b has failed, the flag F in the position determination flag area is set to "0" (step S).
23t), and proceed to step S25.

As shown in FIG. 7, in step S25,
Check whether the lowering drive signal Mb is output,
If it is not output (N in step S25), the process proceeds to step S37, and if it is output (step S25).
Y), it is determined whether or not the second elapsed time Ta in the second elapsed time measurement timer area is equal to or longer than the fully open / closed confirmation time T _LOCK (0.5 sec = second in this embodiment) (step S27). ). If the second elapsed time Ta is not equal to or longer than the full-open and full-close confirmation time T _LOCK (N in step S27), the process returns to step S1. If the second elapsed time Ta is equal to or longer than the full-open and full-close confirmation time T _LOCK (Y in step S27), It is determined whether or not the third elapsed time Tb in the third elapsed time measurement timer area is _{equal to} or longer than the fully open / closed confirmation time T _LOCK (step S).
29).

If the third elapsed time Tb is not equal to or longer than the full-open fully closed confirmation time T _LOCK (N in step S29), the process returns to step S1, and if the third elapsed time Tb is longer than the full-open fully closed confirmation time T _LOCK (step S29). Y), falling drive signal Mb
Is stopped (step S31), and the count value Cc of the one-sided counter area is reset to zero (step S31).
33), a lowering request signal 13b from the open / close switch 13
It is determined whether or not is output (step S3).
5). If the descending request signal 13b has been output (Y in step S35), step S is executed until the signal is no longer output.
35 is repeated, and if no data is output (N in step S35), the process returns to step S1.

In step S37, as shown in FIG.
Check whether the rising drive signal Ma is output,
If not (N in step S37), the process returns to step S1, and if it has been output (step S37).
(Y at 37), it is checked whether the flag F of the position determination flag area is "0" (step S38),
If it is “0” (Y in step S38), the process proceeds to step S125 of FIG. 13 described later, and if it is not “0” (N in step S38), the process proceeds to step S39. In step S39, it is checked whether or not the count value Ca of the first position counter area is equal to or _larger than the boundary value N _DET . The boundary value N _DET is, as shown in FIG.
At the boundary position DL where the gap between the weatherstrip 53 and the windowpane 51 disappears, that is, 13 mm below the upper end 51a of the windowpane 51 in the fully closed position and at the same height as the outer lower end surface 53a of the weatherstrip 53. In the present embodiment, the boundary value _NDET is set to "20", which is a value corresponding to the correct count value Ca, Cb of the first and second position counter areas when the position 51a is located. .

Therefore, the window glass 51 is located in the fully closed region Sc above the boundary position DL where there is no possibility of foreign matter being pinched.
When the upper end 51a of the
The upper end 51a of the window glass 51 is located at the boundary position DL where a and Cb are smaller than the boundary value N _{DET and} there is a possibility that foreign matter may be interposed, and the entrapment detection area So (corresponding to a predetermined detection area) therebelow. In this case, the count values Ca and Cb are equal to or _larger than the boundary value N _DET . And FIG.
If the count value Ca is not equal to or _larger than the boundary value N _DET (N in step S39), as shown in FIG.
When the count value Ca is equal to or _larger than the boundary value N _DET (Y in step S39), the process proceeds to step S41.

In step S41, it is checked whether or not the count value Cb of the second position counter area is equal to or _larger than the boundary value N _DET . If it is equal to or _larger than the boundary value N _DET (Y in step S41). If it is not equal to or greater than the boundary value N _DET (N in step S41), the process proceeds to step S43. In step S43, it is determined whether or not the second elapsed time Ta in the second elapsed time measurement timer area is _{equal to} or longer than the fully open / closed confirmation time T _LOCK . If the second elapsed time Ta is not equal to or longer than the full-open fully closed confirmation time T _LOCK (N in step S43), the process returns to step S1, and if the second elapsed time Ta is equal to or longer than the full-open fully closed confirmation time T _LOCK (Y in step S43), It is determined whether or not the third elapsed time Tb in the third elapsed time measurement timer area is _{equal to} or longer than the fully open / closed confirmation time T _LOCK (step S45).

If the third elapsed time Tb is not equal to or longer than the full-open fully closed confirmation time T _LOCK (N in step S45), the process returns to step S1. If the third elapsed time Tb is equal to or longer than the full-open fully closed confirmation time T _LOCK (step S45). Y), rising drive signal Ma
Is stopped (step S47), and the count value Cc of the one-side counter area is reset to zero (step S47).
49), a rising request signal 13a from the open / close switch 13
Is checked (step S5).
1). If the ascending request signal 13a has been output (Y in step S51), step S is executed until the signal is no longer output.
When the output of the first elapsed time Tu in the first elapsed time measurement timer area is stopped and reset to zero (step S53), the process returns to step S1. To return.

If it is determined in step S41 that the count value Cb of the second position counter area is equal to or greater than the boundary value N _DET (Y), the process proceeds to step S55. the elapsed time Ta is sandwiched confirmation time T _E (0.1 sec = seconds in this embodiment)
Check whether this is the case. Wherein when the second elapsed time Ta is not pinching the confirmation time T _E above (step S5
5) N), the process proceeds to step S59, and the entrapment confirmation time T
If it is greater than or equal to _E (Y in step S55), the third
Third elapsed time Tb elapsed time measuring timer area confirms whether a pinching confirmation time T _E above (step S57). If the not third elapsed time Tb entrapment confirmation time T _E above (N in step S57), the process proceeds to step S59, the case is pinching confirmation time T _E above (Y in step S57), the process proceeds to step S97.

[0038] In step S55 or step S57, the second or the second or the third elapsed time Ta of the third elapsed time measuring timer area, Tb is proceeds if not continuous pinching confirmation time T _E above (N) In step S59, the first elapsed time Tu of the first elapsed time measurement timer area is set.
Is 200 ms (milliseconds) or more, that is, whether 200 ms or more has elapsed since the start of output of the rising request signal 13a in step S5. If the first elapsed time Tu is not equal to or longer than 200 ms (N in step S59), the process returns to step S1 and 200
ms (Y in step S59), step S
Go to 61.

In step S61, as shown in FIG.
Said first detection timing the first pulse signal Pa stored in the buffer area, recently and its two before the rising or falling edge detection time Ta _n, the time difference Ta _n-2, i.e., the first pulse signal Pa cycle Wa _n of, determined in the calculation area, then after storing the cycle Wa _n determined in the first cycle buffer area of RAM 15b (step S63), this cycle Wa _n is the reference period W _REF
(30 ms = millisecond in this embodiment) or more is checked (step S65).

[0040] Unless the cycles Wa _n is a reference period W _REF more (N in step S65), the process proceeds to step S73, if the reference period W _REF above (in step S65 Y), the second detection timing buffer The stored time difference between the edge detection points Tb _n and Tb _n−2 of the latest rising edge or falling edge of the second pulse signal Pb two times before, that is, the period Wb _n of the second pulse signal Pb is calculated. It is determined in the area (step S67). And
The obtained cycle Wb _n is stored in the second cycle buffer area of the RAM 15b (step S69), and it is confirmed whether or not this cycle Wb _n is _equal to or longer than the reference cycle W _REF (step S71). The cycle Wb _n is the reference cycle W
If it is not equal to or greater than _REF (N in step S71), the process proceeds to step S73. If it is equal to or greater than the reference cycle W _REF (Y in step S71), the process proceeds to step S97.

In step S65 or step S71, the periods Wa _n , Wb _{n of} the first or second pulse signals Pa, Pb
Is not greater than or equal to the reference cycle W _REF (N), in step S73, the amount of movement of the window glass 51 per one pulse of the first pulse signal Pa, that is, 2 of the pulse resolution Sa (0.65 mm in this embodiment). twice, the lifting speed Va _n of the first pulse signal Pa of the periodic Wa _n windowpane 51 divided by,
Calculated in the calculation area, and then the calculated lifting speed V
_An is stored in the first speed buffer area of the RAM 15b (step S75). Then, in the calculation area,
The previous elevating speed V an _{-1 of} the first speed buffer area
Differential speed obtained by subtracting from the lifting speed Va _n a (Va _n -V
a _n-1 ) to the cycle Wa _n of the first cycle buffer area.
In by dividing obtains the deceleration Aa _n of the window glass 51 (step S77), after storing the deceleration Aa _n the first deceleration buffer area of RAM 15b (step S79),
Deceleration Aa _n (in this example 3500 mm / sec ² = ms ²⁾ threshold A _HI rapid deceleration not be the usual checks whether it is more (step S8
1).

[0042] Unless the deceleration Aa _n threshold A _HI more (N in step S81), the process proceeds to step S93, if the above threshold value A _HI (Y in step S81), 1 pulse of the second pulse signal Pb The amount of movement of the window glass 51 per hit, that is, the pulse resolution Sb (= Sa, 0.65 in this embodiment)
twice the mm), the lifting speed Vb _n of the second pulse signal Pb period Wb _n windowpane 51 divided by, calculated (step S83 in the operation area), obtained the elevating velocity V
storing b _n to the second speed buffer area of the RAM 15b (step S85). Then, in the calculation area,
The previous lifting / lowering speed Vb _{n-1 of} the second speed buffer area
The differential speed which is obtained by subtracting from the elevating speed Vb _n the (Vb _n -V
b _n-1 ) with the cycle Wb _n of the second cycle buffer area.
To calculate the deceleration Ab _n of the window glass 51 (step S87), and store the deceleration Ab _n in the second deceleration buffer area of the RAM 15b (step S89).
It is determined whether or not the deceleration Ab _n is _equal to or greater than the threshold A _HI (step S91).

[0043] If the deceleration Ab _n threshold A _HI above (Y in step S91), the process proceeds to step S97, if equal to or larger than the threshold A _HI (N in step S91), the process proceeds to step S93. In step S93, as shown in FIG. 10, the first speed of the buffer area for the past predetermined number X min deceleration _{Aa n ~Aa n- (X-1} ) is continuously, the gradual deceleration threshold A _LO (In the present embodiment, 90 mm / sec ² = millisecond ² ) or more is checked, and if the predetermined number of times X does not exceed the threshold A _LO continuously (step S 93)
N), the process returns to step S1, and if the number of times X is equal to or _larger than the threshold value ALO for a predetermined number of times X (Y in step S93), the process proceeds to step S95. In this embodiment, the predetermined number X is six.

In step S95, the decelerations Ab _{n to} Ab for the predetermined number of times X in the second speed buffer area are performed.
_It is checked whether or not _{n- (X-1)} has continuously exceeded the deceleration threshold value A _LO . If the predetermined number of times X has not exceeded the threshold value A _LO continuously (step S 95: N ), The process returns to step S1. If the number of times X is equal to or greater than the threshold value A _LO for a predetermined number of times X (Y in step S95), the process returns to step S1.
Go to 97. In step S97, the descending drive signal Mb is output to the driver 15e.
Step S9 in the elapsed time measurement timer area
The measurement of the fourth elapsed time Ts, which is the elapsed time from the start of the output of the descending drive signal Mb in Step 7, is started (Step S9).
9). Next, the count value Ca of the first position counter area is set as the count value Cd of the third position counter area of the RAM 15b (step S101).
Count value Cd of the fourth position counter area of AM15b
Then, the count value Cb of the second position counter area is set (step S103).

Next, the count value Cd of the third position counter area is subtracted from the count value Ca of the first position counter area, and the increment value Cf of the count value Ca after outputting the descending drive signal Mb in step S97 is calculated. It is determined in the calculation area (step S105). Then, it is checked whether or not the increase value Cf has reached a predetermined entrapment release drive value Nr (230 in this embodiment) (step S10).
7) If it has reached (Y in step S107), the process proceeds to step S109; if not (N in step S107), the process proceeds to step S113.

In step S109, the count value Ce of the fourth position counter area is subtracted from the count value Cb of the second position counter area, and the count value Cg of the count value Cb after the output of the descending drive signal Mb in step S97. In the calculation area. Then, it is confirmed whether or not the increase value Cg has reached the entrapment release drive value Nr (step S111). If it has reached (Y in step S111), the process proceeds to step S115, and if it has not reached ( N) in step S111, step S11
Proceed to 3.

In step S113, it is checked whether or not the fourth elapsed time Ts is continuous for the full open / closed confirmation time T _LOCK or more.
(N in 3), the process returns to step S105, and if they are continuous (Y in step S113), step S115
Proceed to. In step S115, the output of the descending drive signal Mb is stopped. Next, the measurement of the fourth elapsed time Ts in the fourth elapsed time measurement timer area is stopped and reset to zero (step S117). The count value Cc is reset to zero (step S119),
Further, an ascending request signal 13a
It is confirmed whether or not is output (step S12).
1). If the ascending request signal 13a is output (Y in step S121), step S121 is repeated until the signal is no longer output. If not (N in step S121), the first elapsed time measurement timer area is After the measurement of the first elapsed time Tu is stopped and reset to zero (step S123), the process returns to step S1.

On the other hand, when the flag F in the position determination flag area is "0" (Y) in step S38, the process proceeds to step S125, where the first pulse signal Pa from the first sensor 31a is supplied as shown in FIG. It is confirmed whether or not the rising or falling edge is detected. If not detected (N), the process proceeds to step S137, and if detected (Y), the process proceeds to step S127. Step S1
In step 27, in the second elapsed time measurement timer area of the RAM 15b, the next rising or falling edge of the first pulse signal Pa is detected from the time when the rising or falling edge of the first pulse signal Pa is detected in step S125. The measurement of the fifth elapsed time Tc, which is the elapsed time up to the point of detection, is started.
The counter value Ch in the rising amount counter area is incremented by "1" (step S129).

Subsequently, it is confirmed whether or not the first elapsed time Tu in the first elapsed time measurement timer area is equal to or longer than a specified time Tp (0.7 sec = second in this embodiment) (step S131). If it is equal to or longer than the specified time Tp (Y in step S131), the process proceeds to step S157. If it is not equal to or longer than the specified time Tp (N in step S131), the counter value Ch of the first rising counter area is set to the window glass 51. It is determined whether or not the value is equal to or greater than a specified value Cp corresponding to the specified amount of increase (step S133). The counter value C
If h is equal to or larger than the specified value Cp (Y in step S133), the process proceeds to step S157, and if h is not equal to or larger than the specified value Cp (N in step S133), the process proceeds to step S135. In step S135, the fifth elapsed time Tc in the fifth elapsed time measurement timer area is equal to the fully open / closed confirmation time T.
Check if it is _LOCK or more.
If it is not longer than _LOCK (N), the process returns to step S1, and if it is longer than the full open / closed confirmation time T _LOCK (Y),
Proceed to step S153.

In step S137, where the rising or falling edge of the first pulse signal Pa is not detected in step S125, the second sensor 31 is turned on.
It is confirmed whether or not the rising or falling edge of the second pulse signal Pb from b is detected. If it is detected (Y), the process proceeds to step S143. If it is not detected (N), step S139 is performed. Proceed to. Step S139
Then, the second elapsed time T in the second elapsed time measurement timer area
a is, to check whether fully open is fully closed confirmation time T _LOCK above, when fully opened is fully closed confirmation time T _LOCK or more (Y in step S139), the process proceeds to step S153, the fully open fully closed confirmation time T If it is not _LOCK or more (N in step S139), the process proceeds to step S141. In step S141, the third elapsed time Tb in the third elapsed time measurement timer area
But confirms whether fully open is fully closed confirmation time T _LOCK above, when fully opened is fully closed confirmation time T _LOCK or more (Y in step S141), the process proceeds to step S153, the fully open fully closed confirmation time T _LOCK If not (N in step S141), the process returns to step S1.

In step S143, in the third elapsed time measurement timer area of the RAM 15b,
In FIG. 7, a sixth elapsed time Td which is an elapsed time from the time when the rising or falling edge of the second pulse signal Pb is detected to the time when the next rising or falling edge of the third pulse signal Pb is detected. The measurement is started, and then the counter value Cj of the second rising amount counter area of the RAM 15b is incremented by "1" (step S14).
5).

Subsequently, it is confirmed whether or not the first elapsed time Tu in the first elapsed time timer area is equal to or longer than the specified time Tp (step S147). If it is equal to or longer than the specified time Tp (step S147). Y), Step S157
If it is not longer than the specified time Tp (step S1
In N), it is checked whether or not the counter value Cj of the second rising amount counter area is equal to or larger than the specified value Cp (step S149). The counter value Cj is a specified value C
If it is not less than p (Y in step S149), the process proceeds to step S157, and if it is not more than the specified value Cp (N in step S149), the process proceeds to step S151.

[0053] At step S151, the sixth elapsed time Td of the sixth elapsed time measurement timer area, and checks whether fully open is fully closed confirmation time T _LOCK above, when fully open not fully closed confirmation time T _LOCK more Returns to step S1 (N), and if it is equal to or longer than the full open / closed confirmation time T _LOCK (Y), the process proceeds to step S153. In step S153, the count value C of the first and second position counter areas
a and cb are reset to zero, respectively, and the flag F in the position determination flag area is set to "1" (step S155), and then the process proceeds to step S157. In step S157, the measurement of the fifth and sixth elapsed times Tc and Td in the fifth and sixth elapsed time measurement timer areas is respectively stopped and reset to zero, and then the counters in the first and second rising amount counter areas are set. The values Ch and Cj are reset to zero (step S159), and the process proceeds to step S161.

In step S161, the rising drive signal Ma
Is stopped, and then the count value Cc of the one-sided counter area is reset to zero (step S163), and it is confirmed whether or not the on / off switch 13 outputs the rising request signal 13a (step S165). If the ascending request signal 13a has been output (step S16
5), repeats step S165 until no more data is output, and if no data is output (step S165).
N), the measurement of the first elapsed time Tu in the first elapsed time measurement timer area is stopped and reset to zero (step S167), and the process returns to step S1. When replacing a battery (not shown) connected to the microcomputer 15,
All areas except the calculation area of the RAM 15b are reset to zero.

As is apparent from the above description, in this embodiment, the counter means 15A performs steps S19e and S19f in the flowchart of FIG.
The first and second sensors 31 and S23f in the flowchart of FIG.
a, 31b correspond to the pulse signal PA described in the claims, and the first and second count values Ca, Cb of the first and second position counter areas.
Corresponds to the count value CA described in the claims. Further, in the present embodiment, the determination unit 15B performs the processing in step S33 in the flowchart in FIG. 7, step S49 in the flowchart in FIG. 8, step S119 in the flowchart in FIG. 10, step S155 and step S163 in the flowchart in FIG. , And Steps S19p to S19t in FIG. 12 and Steps S23p to S23t in FIG.

Further, in this embodiment, the movement amount regulating means 1
5C corresponds to steps S127 to S1 in FIG.
33, step S143 to step S149, and step S153 to step S161, and the restriction release unit 15D is configured by step S165 in FIG.

Next, the operation (operation) of the power window device of this embodiment having the above-described configuration will be described. First, when the opening / closing switch 13 is tilted backward, a lowering request signal 13b is output from the opening / closing switch 13, and the lowering drive signal Mb input to the driver 15e causes the window glass 51 to lower to the fully open position side. The motor 11 rotates in the direction. Then, every time the motor 11 makes one rotation, the second sensor 31b outputs the second pulse signal Pb once, and the first sensor 31a is delayed from the second pulse signal Pb by a phase of 90 °. The first pulse signal Pa is output once.

When the window glass 51 reaches the fully opened position and the rotation of the motor 11 stops, the first and second sensors 31a and 31b stop outputting the first and second pulse signals Pa and Pb, respectively. When the state continues and the second and third elapsed times Ta and Tb both reach the fully open and fully closed confirmation time T _LOCK , the downward drive to the driver 15 e is performed even if the open / close switch 13 is continuously tilted backward. Signal M
The input of b is stopped. Here, the backward tilting operation of the open / close switch 13 is temporarily released, and then the open / close switch 1 is released.
When the driver 3 tilts rearward again, the lowering drive signal Mb is input again to the driver 15e. However, since the window glass 51 does not move at the fully open position and the motor 11 does not rotate, the first and second sensors 31a and 31b output the lower signal. 1st and 2nd pulse signal P
a, Pb is not outputted, therefore, the fully opened downward input of the drive signal Mb to the driver 15e after a fully closed confirmation time T _LOCK is stopped again.

When the motor 11 rotates in a direction to lower the window glass 51 to the fully opened position, the first sensor 31a
The signal levels of the first and second pulse signals Pa and Pb match at the time of rising and falling of the first pulse signal Pa output from the first pulse signal Pa. For this reason, as the window glass 51 descends to the fully open position side, the count value Ca of the first position counter area for counting the open / close position of the glass window becomes:
Each time the first pulse signal Pa is output, the count value Cb is incremented by "1", and similarly, the count value Cb of the second position counter area is incremented by "1" every time the second pulse signal Pb is output. When the window glass 51 reaches the fully open position, the count values Ca, Ca, in the first and second position counter areas, unless the first and second pulse signals each include a false pulse due to output abnormality or noise. Cb
Are both "N".

On the other hand, when the open / close switch 13 is tilted forward, an up request signal 13a is output from the open / close switch 13 and the up / down drive signal Ma input to the driver 15e causes the window glass 51 to be fully closed. The motor 11 rotates in the direction in which the motor 11 is moved upward. Then, motor 1
Each time 1 rotates once, the first sensor 31a outputs the first pulse signal Pa once, and the second sensor 31b outputs the second pulse signal with a 90 ° phase delay from the first pulse signal Pa. The signal Pb is output once.

When the window glass 51 reaches the fully closed position and the rotation of the motor 11 stops, the first and second sensors 31a and 31b stop outputting the first and second pulse signals Pa and Pb, respectively. When this state continues and the second and third elapsed times Ta and Tb both reach the fully open and fully closed confirmation time T _LOCK , even if the open / close switch 13 is continuously tilted forward, the upward movement to the driver 15 e is performed. Drive signal M
The input of a is stopped. Here, the backward tilting operation of the open / close switch 13 is temporarily released, and then the open / close switch 1 is released.
When the driver 3 tilts rearward again, the lowering drive signal Mb is input again to the driver 15e. However, since the window glass 51 does not move at the fully open position and the motor 11 does not rotate, the first and second sensors 31a and 31b output the lower signal. 1st and 2nd pulse signal P
a, Pb is not outputted, therefore, the fully opened downward input of the drive signal Mb to the driver 15e after a fully closed confirmation time T _LOCK is stopped again.

When the motor 11 rotates in a direction to raise the window glass 51 to the fully closed position, the first and second pulse signals Pa and Pb are changed at the rising and falling of the first pulse signal Pa. Signal levels do not match.
Therefore, as the window glass 51 rises to the fully closed position side, the count value Ca of the first position counter area is increased.
Is decremented by “1” every time the first pulse signal Pa is output, and similarly, the count value Cb of the second position counter area is decremented by “1” every time the second pulse signal Pb is output. The count value Ca of the first and second position counter areas at the time when the window glass 51 reaches the fully closed position, unless the first and second pulse signals each have a false pulse due to output abnormality or noise. , Cb
Are both "0".

The generation of spurious pulses due to output abnormalities and noise as described above is present in the first and second pulse signals.
As a result, although there is not much difference from the opening / closing position of the window glass 51, when the first and second sensors 31a and 31b are normal, any time occurs between the count values Ca and Cb of the first and second position counter areas. When the difference becomes "3", the larger one of the count values Ca and Cb is corrected to the smaller count value.

Further, the motor 11 is rotated by the tilting operation of the open / close switch 13, and the first and second
The sensors 31a and 31b output the first and second pulse signals Pa,
When Pb is output, regardless of its rotation direction,
The count value Cc of the one-sided counter for detecting that one of the first and second sensors 31a and 31b is out of order is incremented by "1" when the first pulse signal Pa is output, and When the second pulse signal Pb is output, it is decremented by "1".

Next, in a state where the upper end 51a of the window glass 51 is located at the boundary position DL and the pinch detection area So below the window glass 51, the upward movement to the driver 15e due to the forward tilting operation of the open / close switch 13 is performed. By the input of the drive signal Ma, the motor 11 rotating in a direction to raise the window glass 51 to the fully closed position side, causes the window frame of the door 5 and the window glass 5 to rotate.
When the first and second sensors 31a and 31b are stopped by a foreign substance sandwiched between the first and second pulse signals P and
a and Pb are no longer output. In this case, the counter values Ca and Cb of the first and second counter areas are used.
Are both equal to or greater than the boundary value N _DET , and the state in which the first and second pulse signals Pa and Pb are not output continues.
The second and third elapsed times Ta, T, which are the elapsed times.
When b reaches both the pinching confirmation time T _E, following pinching release operation is performed.

In the entrapment releasing operation, the open / close switch 13
, The input of the ascending drive signal Ma to the driver 15e is stopped, and then the descending drive signal Mb is input to the driver 15e to
The motor 11 rotates in a direction to lower the motor to the fully open position side. Then, after both the increments of the counter values Ca and Cb in the first and second counter areas from the start of the input of the descending drive signal Mb to the driver 15e reach the pinch release specified value Nr, the descending drive signal Mb Driver 1
The input to 5e is stopped, and the rotation of the motor 11 is stopped. Thereby, the amount sufficient to eliminate the foreign substance entrapment state (in the present embodiment, the first and second pulse signals Pa, Pa,
Pb pulse resolution Sa, Sb x entrapment release specified value N
The window glass 51 descends by (r = 0.65 mm × 230 = approximately 15 cm).

The period from the start of the input of the descending drive signal Mb to the driver 15e until the increments of the counter values Ca and Cb in the first and second counter areas both reach the entrapment release specified value Nr. If the window glass 51 reaches the fully open position and the rotation of the motor 11 stops,
The input of the rising drive signal Ma to the driver 15e is stopped by the same operation as the operation when the normal window glass 51 is opened.

As described above, the window frame of the door 5 and the window glass 51
When the rotation of the motor 11 is stopped by a foreign substance caught between the two, the above-described pinching release operation is performed according to the length of the stop time. However, just because a foreign matter is caught between the window frame of the door 5 and the window glass 51 does not necessarily stop the rotation of the motor 11, and the motor 11 does not stop and rotates depending on the hardness of the caught foreign matter. You may continue to do so.
Therefore, the upper end 51a of the window glass 51 is located at the boundary position DL and the pinch detection area So below the boundary position DL, and the counter values Ca and Cb of the first and second counter areas are located.
_Are both greater than or equal to the boundary value N _DET , the period Wa _n , Wb _{n of} the first and second pulse signals Pa, Pb, , deceleration Aa _n of the motor 11, Ab _n
Is performed depending on the value of.

First, the rotation of the motor 11 becomes considerably slow, and both of the periods Wa _n and Wb _n are _equal to the reference period W _REF.
In the case described above, the sandwiching operation is performed. Next, even if at least one of the periods Wa _n and Wb _n is less than the reference period W _REF , the deceleration Aa _n and Ab b
_n is a sudden decrease which is far from ordinary, such as a squeak of the glass window 51 against the window frame of the door 5 or a deceleration when the motor 11 is decelerated due to the contact of the hand or the body with the glass window 51. When the speed becomes equal to or higher than the threshold value A _HI , the pinching operation is performed. Further, at least one of the periods Wa _n and Wb _n is less than the reference period W _REF , and
The deceleration Aa _n, at less than at least one of the threshold A _HI of Ab _n, deceleration Aa _n of past predetermined number X min
~Aa _{n- (X-1),} both _{Ab n ~Ab n- (X-1} ) is continuously, if it becomes more than the threshold value A _LO loose deceleration, performs the pinching operation.

The above-mentioned periods Wa _n , Wb _n and deceleration Aa
The execution determination of the entrapment release operation based on the values of _n and Ab _n
The rotation speed of the motor 11, and thus the periods Wa _n , W
b _n and deceleration Aa _n, in order to stabilize the value of the Ab _n,
The operation is performed after a lapse of 200 ms from the start of the output of the rising request signal 13a by the forward tilting operation of the open / close switch 13. Further, the upper end 51a of the window glass 51 is located in the fully closed area Sc above the boundary position DL, and the outer lower end surface 53a of the weather strip 53 and the window glass 5
When no gap is formed between the upper ends 51a of the first and second counters 51a, both of the counter values Ca and Cb in the first and second counter areas are smaller than the boundary value N _DET , so that the above-described foreign object entrapment detecting operation is performed. Is not performed. Further, when the window glass 51 is lowered, there is no fear that a foreign object is caught between the window frame of the door 5 and the window glass 51. Therefore, the above-described foreign object detection operation is not performed in this case.

During one tilting operation of the open / close switch 13, the first and second pulse signals Pa and P are output due to the failure of one of the first and second sensors 31a and 31b.
If only one of b is output and the other is not output at all, if this phenomenon continues for 10 pulses,
Assuming that the count values Ca and Cb corresponding to the pulse signals Pa and Pb that are not output have become indefinite values that do not correspond to the open / close position of the window glass at all, when the window glass 51 is raised to the fully closed position side, The following processing is performed.

The operation of the open / close switch 13 causes the motor 11
Is rotated to the fully-closed position side of the window glass 51, the elapsed time Tu from the operation of the open / close switch 13 having a correlation with the rotation time of the motor 11 reaches the specified time Tp, or the amount of rise of the window glass 51 Pulse signals Pa and Pb having correlation with
When at least one of them reaches the specified value Cp, the rotation of the motor 11 is stopped unconditionally even if the window glass 51 has not reached the fully closed position, and thereafter, unless the operation of the open / close switch 13 is once released. No matter how much the open / close button 13 is continuously operated, the motor 11 does not rotate. When the window glass 51 reaches the fully closed position by repeatedly operating and releasing the open / close button 13, the counter values Ca and Cb in the first and second counter areas both correspond to the fully closed position. The counter is reset to "0", and the one-sided counter is reset to "0". This processing is
The same operation is performed when the count value Ca, Cb is reset and the flag F in the position confirmation flag area becomes “0”, for example, when replacing a battery (not shown) connected to the microcomputer 15.

As described above, according to the power window device of this embodiment, the first and second two sensors 31a, 31a of the pulse generator 31 are synchronized with the rotation of the motor 11.
b, the number of pulses of each of the pulse signals Pa and Pb output once per rotation of the motor 11 is obtained by counting up and down in the first and second position counter areas according to the rotation direction of the motor 11. When the count values Ca and Cb become undefined values that do not correspond to the open / close position of the window glass 51, the window glass 51 is moved to the fully closed position and the count values Ca and Cb are set to “0”. When it is necessary to correct the rotation, the rotation of the motor 11 is stopped for a certain period of time or by a movement amount even if the open / close switch 13 is continuously operated.

For this reason, for example, the count value C is set so that it is not possible to detect the entrapment of the foreign matter by the window glass 51.
When the window glass 51 is raised to the fully closed position side where there is a possibility of being pinched in a state where a and Cb are indeterminate, for example, the child operates the open / close switch 13 with prank or does not look at the window glass 51. Even when the open / close switch 13 is operated, the window glass 51 does not continuously rise during the operation, so that the safety against pinching of foreign matter can be maintained at a high level.

According to the present embodiment, the open / close switch 1
Motor 1 for raising window glass 51 during operation of 3
When the operation of the open / close switch 13 is released after the rotation of the motor 1 is stopped, the rotation stop of the motor 11 is released. Therefore, in order to rotate the motor 11 again after the motor 11 stops, the open / close switch 13 is required. Is required to be released and re-operated. At that time, the user is urged to be alerted to the rising state of the window glass 51, so that the rising operation of the window glass 51 in a state where it is not possible to detect the entrapment of foreign matter is performed safely. Can be

The structure for detecting the open / close position of the window glass 51 based on the count values Ca and Cb of the first and second position counter areas, the structure for detecting the state of foreign matter being pinched, and the structure for detecting foreign matter A configuration for canceling the entrapment state after the entrapment is detected, and the count values Ca and Cb in a state where there is not much difference from the open / close position of the window glass 51.
The configuration for correcting the difference between them is not limited to the configuration shown in the present embodiment, but may be arbitrary, or some or all of these configurations may be omitted.

In this embodiment, the first and second count values Ca and Cb are obtained from the two pulse signals Pa and Pb from the first and second sensors 31a and 31b. The present invention is also applicable to a power window device configured to obtain a single count value with one pulse signal. Further, the timing for counting up and down the first and second count values Ca and Cb is limited to the timing shown in the present embodiment, such as when one of the rising edge and the falling edge of the pulse signal is detected. The configuration for outputting the pulse signals Pa and Pb and the configuration for detecting the pulse signals are not limited to the configuration shown in the present embodiment, and are arbitrary. The present invention is not limited to the power window device that opens and closes the window glass 51 of the door 5 on the side of the vehicle as shown in the present embodiment, but also opens and closes the window glass by a motor, such as the window glass of the rear door. It is needless to say that the present invention can be widely applied to a power window device that performs the following operations.

[0078]

As described above, according to the present invention, the window glass is moved in the opening / closing direction by the motor in response to the operation of the open / close switch, and the number of pulses of the pulse signal output in synchronization with the rotation of the motor is controlled. A power window device for increasing or decreasing the count value of the counter means in accordance with the rotational direction of the motor to correspond to the open / close position of the windowpane, wherein the count value corresponds to the open / close position of the windowpane Determining means for determining whether the motor is in the closing direction of the window glass by operating the open / close switch when the count value does not correspond to the open / close position of the window glass based on the determination result of the determining means. Rotation,
Movement amount regulating means for stopping at least one of a time when a predetermined time has elapsed from the start of rotation of the motor and a time when the window glass has moved by a predetermined amount ;
When the count value does not correspond to the open / close position of the lath,
The opening and closing switch for rotating the motor in the closing direction;
When the operation of the switch is released, the
And a regulation release means for releasing the rotation stop of the motor .

For this reason, for example, due to the replacement of the battery or the output leak or the detection leak of the pulse signal, a deviation occurs between the actual open / close position of the window glass and the count value. Even if the glass is moved to the fully closed position, which is the reference position of the movement range, and it is necessary to reset the count value to a predetermined value corresponding to the fully closed position, even if the open / close switch is continuously operated, The rotation of the motor is stopped for a fixed time or by the amount of movement by the movement amount restricting means, and in particular, there is an effect that the movement of the window glass, which may pinch foreign matter, in the closing direction can be performed safely. Play.

[Brief description of the drawings]

FIG. 1 is a basic configuration diagram of a power window device of the present invention.

FIG. 2 is an explanatory diagram showing a schematic configuration of a power window device according to an embodiment of the present invention by partial blocks.

FIG. 3 is an explanatory diagram showing a configuration of a pulse signal generator of FIG. 2;

FIG. 4 is an explanatory diagram of a pulse signal output by first and second sensors of the pulse signal generator of FIG. 3;

5 is a block diagram showing a hardware configuration of the microcomputer shown in FIG.

FIG. 6 is a memory area map of a RAM of the microcomputer shown in FIG. 2;

FIG. 7 is a flowchart showing a process performed by a CPU according to a control program stored in a ROM of the microcomputer shown in FIG. 2;

8 is a flowchart showing a process performed by a CPU according to a control program stored in a ROM of the microcomputer shown in FIG.

FIG. 9 is a flowchart showing a process performed by a CPU according to a control program stored in a ROM of the microcomputer shown in FIG. 2;

FIG. 10 is a flowchart showing a process performed by a CPU according to a control program stored in a ROM of the microcomputer shown in FIG. 2;

FIG. 11 is a flowchart showing a process performed by a CPU according to a control program stored in a ROM of the microcomputer shown in FIG.

FIG. 12 is a flowchart showing a subroutine of a first sensor pulse detection interrupt process shown in FIG. 7;

FIG. 13 is a flowchart showing a subroutine of a first sensor pulse detection interrupt process shown in FIG. 7;

FIG. 14 is an explanatory diagram showing a boundary position between the fully closed area of the window glass and the pinch detection area shown in FIG. 2;

[Explanation of symbols]

 Reference Signs List 11 motor 13 open / close switch 15 microcomputer 15a CPU 15b RAM 15c ROM 15A counter means 15B discriminating means 15C movement amount regulating means 15D regulation releasing means 51 window glass CA count value PA pulse signal

Claims (1)

(57) [Claims] 1. A window means is moved by a motor in an opening and closing direction in response to an operation of an on / off switch, and a counter means is provided based on the number of pulses of a pulse signal output in synchronization with the rotation of the motor and the rotation direction of the motor. A power window device for increasing or decreasing the count value of the window glass to correspond to the open / close position of the windowpane, wherein a determination unit that determines whether the count value corresponds to the open / close position of the windowpane, Based on the determination result, when the count value does not correspond to the open / close position of the window glass, the rotation of the motor in the closing direction of the window glass by operating the open / close switch is performed for a predetermined time from the start of rotation of the motor. time but have passed, and the window glass and the movement amount regulating means for stopping at least one point of time of the movement a predetermined amount, the window glass Unpaired of the count value for the closed position
Timely to rotate the motor in the closing direction.
When the operation of the open / close switch is released, the movement amount is restricted.
Release of the rotation stop of the motor by means
Provided with means, a power window device, characterized in that.